OBRABOTKAMETALLOV technology Vol. 25 No. 4 2023 Specimen 1 Specimen 2 Specimen 3 Specimen 4 Specimen 5 Specimen 6 Specimen 7 Specimen 8 Fig. 4. Deformation pattern of welded specimens Ta b l e 3 The result of a two-factor experiment Iteration No. Х1 Х2 Weld cap width Root bead width Weld cap height Root bead height 1 600 37 15.9 16.3 1 1 2 600 37 18 13.5 0 4 3 500 37 17.4 11 2 1 4 400 37 14 5.5 0.5 2 5 450 37 15 9 0.5 2 6 450 27 12.5 8 1 0.5 7 500 27 12.5 9.3 2 1 8 500 27 13.1 10.2 2 0.5 Regression equation Y = 1.52 + + 0.01X1+0.253X2 Y= -12.62 + + 0.0445X1+0.0225X2 Y = 2.44 + + 0.0008X1 – 0.054X2 Y= -2.55 + + 0.0025X1 + 0.0875X2 а b Fig. 5. Graphs of the dependence of the width (a) and the height of the reinforcement (b) of the seam from the regression equations for welding plates with a thickness of 5 mm on the welding modes
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